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Galina-37 [17]
3 years ago
14

Many years ago, the population of right whales decreased dramatically due to the large number of whaling ships hunting them. Eve

ntually, most countries outlawed the hunting of these and other whales and the number of whaling ships hunting them decreased. Over time the population of the right whales increased again. In this situation the independent variable is the (4 points)
A. number of whales.
B. number of whaling ships.
C. years that have passed.
D. reproduction rate of the right whale.

11. Animals and plants living on the rocky shores use all of the following special adaptations to live in these conditions except (4 points)
A. staying in cracks, under rocks or burrowing.
B. closing their valves tightly like barnacles and oysters.
C. camouflaging and appearing to be invisible by blending.
D. finding places that receive a lot of sun and air

17. Which of the following is not a characteristic shared among all crustaceans?
A. exoskeletons
B. chelipeds or claws
C. swimmerets
D. mandibles
Biology
1 answer:
djverab [1.8K]3 years ago
6 0
1.I believe it is C.
2.It is A
3.It is B
I hope this helped

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For a species with a diploid number of 26, indicate how many chromosomes will be present in the somatic nuclei of individuals th
zhuklara [117]

Answer:

<h2>Haploid=13</h2><h2>triploid=39 </h2><h2>tetraploid=52</h2><h2>trisomic=14 </h2><h2>monosomic=12</h2>

Explanation:

Given;

A species with a diploid number of 26,  so 26= 2n ( a diploid cell),

so in haploid condition, chromosome number becomes half (13 in this case). triplod is when 2n + n, and 2n +2n ( tetploid). Trisomy and monosomy is the addition or deletion of a sinlge chromosome of a sinlge set  .

Haploid=13, one chromosome from each pair of chromosome set,

triploid=39 (13× 3); diploid+ n( 3n)

tetraploid=52 (13× 4) 4n

trisomic=14 (13+1) ; n+1

monosomic=12 (13-1); n-1

7 0
3 years ago
What plant cell organelle uses light energy to produce sugar
Andrei [34K]
It is the stalk of the plant
8 0
3 years ago
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What are characteristics of allosteric enzymes?
Veronika [31]

Answer:

(B) They may have binding sites for regulatory molecules that are separate from active sites.

(C) They generally have more than one subunit.

(E) They interconvert between a more active form and a less active form.

Explanation:

Allosteric enzymes are the regulatory enzymes that have a specific site for binding of modulator or effector molecule. The activity of these enzymes is altered by the noncovalent binding of modulators at the allosteric site. The binding of the modulator brings about a conformational change in the allosteric enzymes.

The relatively inactive conformation of these enzymes is called T state while the active conformation is the R state. Most of the allosteric enzymes have multiple subunits and deviate from Michaelis–Menten kinetics and exhibit a sigmoid saturation curve of V0 vs. [S].

5 0
3 years ago
A scientist has discovered a new plant species in the Amazon rainforest she tells her fellow scientist at the Playhouse she has
Anna11 [10]

Answer:

It is a seeded vascular plant.

It does not depend on insect pollination.

Explanation:

The complete question is: <em>A scientist has discovered a new plant species in the Amazon rainforest. She tells her fellow scientists that the plant she has found produces a cone. What might they say about how this plant is different from an angiosperm? Its seeds have one or two cotyledons. Its stems' vascular bundles are scattered. It does not depend on insect pollination. It is a seeded vascular plant. </em>

<em />

<em>The correct option would be that the plant is a seeded vascular plant and does not depend on insect pollination.</em>

Gymnosperms are the only group of plants that produce cones. They are one of the plant groups that have vascular tissues in the form of xylem and phloem as well as been able to produce seed in the form fo cones. Hence, they are said to be seeded vascular plants.

Gymnosperms also carry out their pollination by relying solely on wind for the transfer of their pollen grain to the female organ. In other words, they do not depend on insect for pollination.

8 0
3 years ago
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Paha777 [63]

Answer:

I am pretty sure.. it's option B.

COBALT.

6 0
3 years ago
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