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elena55 [62]
3 years ago
6

A certain cell has a dense nucleoid region, ribosomes, but no membrane-enclosed organelles. Based on this information, it could

be __________.
Biology
1 answer:
IRINA_888 [86]3 years ago
6 0

Answer:

The options are missing in the question, the options are;

a. an archaean

b. a Paramecium

c. a yeast (fungus) cell

d. a grasshopper cell

The correct answer is A (an archaean)

Explanation:

Archaea and Bacteria are domains where prokaryotes are commonly found. Archaea and Bacteria as prokaryotes are unicellular organisms that lacks membrane-bound organnelles and a well defined nucleus, in the sense that unlike eukaryotic cells, a nucleus does not house their genetic material (DNA), instead their single circular chromosome is nakedly localized in a region called the NUCLEOID.

In addition, prokaryotic cells lacks many organnelles found in eukaryotic cells e.g mitochondria, Endoplasmic reticulum, lysosome etc. The few ones like ribosomes found in their cytoplasm are not enclosed by lipid bilayers called membranes.

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7 0
3 years ago
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A sedimentary rock formed from once-living things is _____.
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My answer would be B.organic

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A ship is at anchor. Over its side hangs a rope ladder with rungs a foot apart. The
Triss [41]

Answer:

At the end of 6 hours, 6 feet of the ladder remained above water

Explanation:

we are given the following:

change in tide = 8 inches per hour

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∴ 6 hours = 8 × 6 = 48 inches

Now, since the length of the ladder is measured in foot, let us convert the rate of tide rising to foot.

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dividing both sides by 12:

1\ inch=\frac{1}{12}\ feet\\ \therefore 48\ inches\ =\ 48\ \times \frac{1}{12}\\ =\frac{48}{12}\\ = 2 feet

Therefore, after 6 hours, the tide rises by 2 feet.

Next, we are told that the rope ladder at the beginning was 8 feet, hence the length remaining above water after 6 hours of the rising of the tide is calculated as follows:

= 8 feet above water

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∴ length above water = (ladder before rising of the tide) - (amount submerged in water)

length above water = 8 - 2 = 6 feet

Therefore at the end of 6 hours, 6 feet of the ladder remained above water

5 0
3 years ago
racoons are opportunistic feeders and will eat just about anything they can find. they will catch and eat invertebrates such as
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Answer:

Explanation:

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6 0
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Which element is a metaloid
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Answer:

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Explanation:

I hope this will help you:)

3 0
3 years ago
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