All categories

3 years ago

What event marked the end of the mesozoic era and the beginning of the cenozoic era

Biology

1 answer:

Elina [12.6K]3 years ago

4 0

An astroid impact killed off the dinosars which in turn made the first primates evolve.

You might be interested in

Which statement best describes the outcome of both meiosis and mitosis

Anvisha [2.4K]

Answer:

Cell division results in daughter cells that contain DNA. Each daughter cell has two complete sets of chromosomes. Within a cell, two chromosomes pair up and exchange segments of genetic material.

Explanation:

6 0

3 years ago

If you were to magnify a cell 10,000-fold (typical of the magnification achieved using an electron microscope), how big would it

Amiraneli [1.4K]

In this case i am supposed to use the formula of magnification as indicated in the here

Magnification=size of the image divided by the size of the object

so in this case we have been given magnification and the size of the object

magnification=×10, 000 and size of the object=50 micrometer

size of the image=10000×50
=50,0000 micrometers

5 0

3 years ago

Why do you think the human stomach pH range is 2.0 - 3.0?

Inga [223]

Answer:

The stomach has a pH between 1.5 and 3.5 generally and this is due to the cells in the stomach releasing hydrochloric acid.

Explanation:

So as cells in the intestines gradually release more and more sodium bicarbonate, the pH raises from around 1 to around 7. Answer 2: The stomach usually has a pH of 2 or 3

7 0

3 years ago

Classify the following organisms into their respective kingdoms (i) Yeast (ii) Penicillium (iii) Rhizobium (iv) Mushroom (v) Amo

lions [1.4K]

Answer:

(i) Yeast- Kingdom Fungi

(ii) Penicillium- Kingdom Fungi

(iii) Rhizobium- Kingdom Eubacteria

(iv) Mushroom- Kingdom Fungi

(v) Amoeba- Kingdom Protista

(vi) fish- Kingdom Animalia

Explanation:

Living organisms were classified into a large group called KINGDOM, which represent the largest and most generic grouping consisting of organisms that share a few similarities. The kingdoms that living organisms were classified into are as follows: Plantae, Animalia, Fungi, Protista, Eubacteria, Archaebacteria, etc.

Based on the question, the mentioned organisms are classified into the following kingdoms:

(I) Yeast: Yeast is a unicellular microbe classified under the Kingdom Fungi due to possession of chitin in its cell wall and other similar features with members of kingdom Fungi.

ii) Penicillium- Penicillium is a genus classified under the Kingdom Fungi.

(iii) Rhizobium- Rhizobium is a genus of prokaryotic organism (lack membrane-bound nucleus and organnelles) classified under the Kingdom Eubacteria.

(iv) Mushroom- Mushrooms are saprophytic (heterotrophic) species of organisms classified under the Kingdom Fungi.

(v) Amoeba- Amoeba is a genus of unicellular eukaryotes classified under the Kingdom Protista.

(vi) fish- Fishes are organisms classified under the Kingdom Animalia

3 0

3 years ago

Since neither pink or blue is dominant over the other, and some plums are purple, what type of inheritance pattern does this dis

babymother [125]

There aquired fruits

8 0

3 years ago